PRIORITIZING BRIDGES TO REPAIR BASED ON RISK
First Claim
1. Computer-readable media having computer-executable instructions embodied thereon that, when executed, cause a computing device to perform a method of calculating a risk of not repairing a bridge, the method comprising:
- generating a live-load-risk factor for a bridge based on an overload probability and an operating rating;
generating a bridge-condition risk factor for the bridge based on an average structural condition of bridge elements;
generating a probability-of-failure factor for the bridge by combining the live-load-risk factor for the bridge with the bridge-condition risk factor for the bridge;
generating a consequence-of-failure factor for the bridge;
generating an overall risk factor for the bridge that is a product of multiplying the consequence-of-failure factor for the bridge and the probability-of-failure factor for the bridge; and
storing the overall risk factor for the bridge in a data store.
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Accused Products
Abstract
Embodiments of the invention are generally directed toward methods, systems, and computer-readable media for prioritizing bridge repairs using a risk-based analysis. An overall risk factor is generated for each of a plurality of bridges. The overall risk factor represents the probability of failure times the consequence on failure for the bridge. Repairs to bridges that pose a greater risk may be prioritized before repairs made to bridges posing a lower risk.
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Citations
20 Claims
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1. Computer-readable media having computer-executable instructions embodied thereon that, when executed, cause a computing device to perform a method of calculating a risk of not repairing a bridge, the method comprising:
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generating a live-load-risk factor for a bridge based on an overload probability and an operating rating; generating a bridge-condition risk factor for the bridge based on an average structural condition of bridge elements; generating a probability-of-failure factor for the bridge by combining the live-load-risk factor for the bridge with the bridge-condition risk factor for the bridge; generating a consequence-of-failure factor for the bridge; generating an overall risk factor for the bridge that is a product of multiplying the consequence-of-failure factor for the bridge and the probability-of-failure factor for the bridge; and storing the overall risk factor for the bridge in a data store. - View Dependent Claims (2, 3, 4, 5)
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6. Computer-readable media having computer-executable instructions embodied thereon that, when executed, cause a computing device to perform of method of determining a risk associated with not repairing a bridge, the method comprising:
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generating a live-load-risk factor for a bridge based on an overload probability and an operating rating, wherein the overload probability is based on an average daily truck traffic carried by the bridge, wherein the operating rating is one or more of an entry retrieved from a database describing bridge characteristics, calculated based on a design load, and based on a bridge posting; generating a bridge-condition risk factor for the bridge based on an average structural condition of bridge elements, wherein the bridge-condition risk factor is based on a weighted combination of bridge element conditions, wherein the greater of an average superstructure condition or an average substructure condition is given more weight than an average deck condition, an average special elements condition, and an average other element condition, and wherein the greater of the average superstructure condition and the average substructure condition is adjusted if the bridge is designated as fracture critical; generating a probability-of-failure factor for the bridge by combining the live-load-risk factor for the bridge with the bridge-condition risk factor for the bridge, wherein the probability-of-failure factor and the live-load-risk factor is combined by adding a first product of multiplying the probability-of-failure factor with a first weighting factor and a second product of multiplying the live-load-risk factor by a second weighting factor, and wherein the first weighting factor and the second weighting factor are equal to each other; generating a consequence-of-failure factor for the bridge based at least on an importance of a route of which the bridge is a part, a detour length required should the bridge be closed, and a replacement cost of the bridge; generating an overall risk factor for the bridge that is a product of multiplying the consequence-of-failure factor for the bridge and the probability-of-failure factor for the bridge; and storing the overall risk factor for the bridge in a data store. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. Computer-readable media having computer-executable instructions embodied thereon that, when executed, cause a computing device to perform a method of determining a bridge-condition risk factor for a bridge, the method comprising:
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generating an average superstructure condition by averaging a condition score for each superstructure element of the bridge; generating an average substructure condition by averaging a condition score for each substructure element of the bridge; generating an average deck condition by averaging a condition score for each deck element of the bridge; generating an average other element condition for other elements by averaging a condition score for each other element in the bridge; generating an average special-element condition by averaging a condition score for each special element of the bridge; and adding the average special-element condition, the average other element condition, the average deck condition with the larger of the average superstructure condition and the average substructure condition to arrive at the bridge-condition risk factor for the bridge. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification